blob: fa374399632b7b14cbbfbbc791911df9c24d30d6 [file] [log] [blame]
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#include "starboard/shared/starboard/player/filter/audio_frame_tracker.h"
#include <queue>
#include "starboard/common/scoped_ptr.h"
#include "starboard/log.h"
#include "starboard/media.h"
#include "starboard/mutex.h"
#include "starboard/shared/internal_only.h"
#include "starboard/shared/starboard/thread_checker.h"
namespace starboard {
namespace shared {
namespace starboard {
namespace player {
namespace filter {
AudioFrameTracker::Impl::Impl() : frames_played_adjusted_to_playback_rate_(0) {}
void AudioFrameTracker::Impl::Reset() {
while (!frame_records_.empty()) {
frame_records_.pop();
}
frames_played_adjusted_to_playback_rate_ = 0;
}
void AudioFrameTracker::Impl::AddFrames(int number_of_frames,
double playback_rate) {
SB_DCHECK(playback_rate > 0);
if (frame_records_.empty() ||
frame_records_.back().playback_rate != playback_rate) {
FrameRecord record = {number_of_frames, playback_rate};
frame_records_.push(record);
} else {
frame_records_.back().number_of_frames += number_of_frames;
}
}
void AudioFrameTracker::Impl::RecordPlayedFrames(int number_of_frames) {
while (number_of_frames > 0 && !frame_records_.empty()) {
FrameRecord& record = frame_records_.front();
if (record.number_of_frames > number_of_frames) {
frames_played_adjusted_to_playback_rate_ +=
static_cast<int>(number_of_frames * record.playback_rate);
record.number_of_frames -= number_of_frames;
number_of_frames = 0;
} else {
number_of_frames -= record.number_of_frames;
frames_played_adjusted_to_playback_rate_ +=
static_cast<int>(record.number_of_frames * record.playback_rate);
frame_records_.pop();
}
}
}
int64_t AudioFrameTracker::Impl::GetFramesPlayedAdjustedToPlaybackRate() const {
return frames_played_adjusted_to_playback_rate_;
}
} // namespace filter
} // namespace player
} // namespace starboard
} // namespace shared
} // namespace starboard